title: Sildenafil citrate vs intracavernous alprostadil for patients with arteriogenic erectile dysfunction: a randomised placebo controlled study.
mesh_terms: D000328:Adult; D000368:Aged; D000527:Alprostadil / Q000008:administration & dosage*; D001158:Arteries; D007172:Erectile Dysfunction / Q000000981:diagnostic imaging / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010879:Piperazines / Q000008:administration & dosage*; D010919:Placebos; D011687:Purines; D012039:Regional Blood Flow; D000068677:Sildenafil Citrate; D013450:Sulfones; D016896:Treatment Outcome; D014463:Ultrasonography; D014652:Vascular Diseases / Q000150:complications; D014665:Vasodilator Agents / Q000008:administration & dosage*
chemical_list: D010879:Piperazines; D010919:Placebos; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate; D000527:Alprostadil